Palladium-Catalyzed Intramolecular Cyclization of Vinyl and Aryl Triflates. Associated Regioselectivity of the beta-Hydride Elimination Step.
作者:Shaowo Liang、Leo A. Paquette、C. Oliver Kappe、Regis Leung-Toung、Curt Wentrup、Jørgen B. Pedersen、Povl Krogsgaard-Larsen
DOI:10.3891/acta.chem.scand.46-0597
日期:——
Pd(0)-catalyzed intramolecular olefination of vinyl and aryl triflates has been studied with a view to gaining insight into the question of kinetically preferred reductive elimination when at least two options are available. In either series, a non-activated alkene participant was found to be converted most readily into the non-conjugated cyclization product. This trend is seen despite the more forcing conditions